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Hydrogen dimethicone
AKA “Dimethicone Copolymer, Cyclopentasiloxane Copolymer, Silicone Fluid”
Ingredient
Ingredient Facts
Hydrogen dimethicone
AKA: Dimethicone Copolymer, Cyclopentasiloxane Copolymer, Silicone Fluid
Ingredient · Film Forming · EWG: 2
Synthetic
Occlusive
Silicone
Clean
Hydrogen Dimethicone is a derivative of Dimethicone where some of the methyl groups have been replaced with a hydrogen atom
CAS #
68037-59-2, 69013-23-6, 70900-21-9
Form
Liquid
See origin →
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Creates Protective Barrier
Brightens Skin
Antioxidant Protection
Reduces Inflammation
Traditional Use
Developed in the mid-20th century as a silicone polymer derivative. Used in cosmetics since the 1970s as an emollient and conditioning agent for skin and hair.
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
ewg-2
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Bis-Isobutyl PEG-13/Dimethicone Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Bis-Isobutyl PEG-24/PPG-7/Dimethicone Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Bis-Isobutyl PEG/PPG-10/7/Dimethicone Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Bis-Methoxy PEG-10 Dimethyl MEA/HDI/Bis-PEG-10 Dimethicone Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydrogen dimethicone
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydrogen Dimethicone/Octyl Silsesquioxane Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Stearoxymethicone/Dimethicone Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Hydrogen dimethicone
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Stearoxymethicone/Dimethicone Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Verified Jun 2026
Data: CosIng · EWG · CIR